Abstract
In this paper, a new source-follower-type analog buffer for active-matrix displays, designed by using low-temperature polysilicon thin-film transistors (TFTs), is proposed. The buffer, consisting of five n-type polysilicon TFTs, one bias voltage, and an additional control signal, exhibits high immunity to threshold voltage and mobility variations. The functionality of the proposed buffer was verified by HSPICE simulations. In order to obtain realistic simulations, the TFT model parameters used for the simulations were extracted from fabricated TFTs using the Silvaco tools (ATLAS). The proposed buffer has 7-bit output voltage with the dynamic output voltage range of 7.5 V ranging from 2.5 to 10 V and with resolution up to 0.03 V
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